Well i've been thinking about this dilemma for a few days and have narrowed it to 3 choices. Which one would you choose below?

1. Buy the 70-200mm IS MK II for about $2099 new

2. Buy the 135L used at about $800 in craigslist + a 70-200mm 2.8 non-IS $1299 new

3. Buy the 135L used at about $800 in craigslist + a 70-200mm f/4 IS $1099 new

4. Any other suggestions based on my use below?

Im new to paid photography though been a hobbyist for years. Recently upgraded to 5D MK III which makes me think that i dont need the 2.8 with IS since i can always bump up the ISO to compensate and i don't do sports photography.. Also interested with the 135L since i have never seen a bad review on it. I am and will be shooting 80% indoor/outdoor portraits for babies, engagement shoots and fitness models. I do predict that about 20-30% of my business will be weddings in 2013. As of now only have 1 wedding book and another on the way for 2013 so mostly portraits/engagement shoots at the moment.

Julie G.:
I would go for 135L + 70-200mm f/4 IS. Then you can use the 70-200 when you need the range and the 135L when you need the extra stops of light or want the bokeh.

* The 70-200 F2.8 IS II is a great lens, sharp and fast. It can definitely be used as a portrait lens, if you don't mind lugging it along (really heavy).* The F4 IS is also sharp and it weigh a lot less (760g) than the 2.8 IS II (1490g).* The 135L is sharp, F2, inexpencive and has a great bokeh.* The 70-200 F2.8 NON IS is sharp, but it lacks IS and only weighs a bit less (1310g) then the IS II. Might be a problem, might not.I don't have any real hands-on experience with these lenses, so this is just how I would have decided.

87vr6:
Sell the 24-105 and 28-75, get the 70-200II 2.8 IS, 135, and 35. You should be able to pull that off. Don't be afraid to buy used, especially today at lensrentals, they're selling all kinds of canon lenses, plus an additional 10% off...

35 for 950ishhttps://www.lensrentals.com/buy/canon/canon-35mm-f1.4l-serial-number-112388

If you're doing portraits and weddings, you need fast lenses.

infared:
Lense(s)???? :) :)

cdang:
70-200 2.8 IS

I don't get why people are afraid of the weight. I carry the 200 F2 around all day and I'm not a big guy (65 kg, 140 pounds?). I own both and the versatility of the 70-200 is awesome for weddings. And if you have the 135 + 70-200 F4 in your bag, then it's the same weight as the 2.8 but you don't have to change lenses.